G.f. satisfies A(x) = 1 + x*A(x) - x^2*A(x)^5.

Terms

a(0) =1a(1) =1a(2) =0a(3) =-5a(4) =-15a(5) =0a(6) =170a(7) =619a(8) =69a(9) =-8351a(10) =-33601a(11) =-8446a(12) =480679a(13) =2078534a(14) =830739a(15) =-30221481a(16) =-138791261a(17) =-76306831a(18) =2009474129a(19) =9742939809a(20) =6811893809a(21) =-138835809721a(22) =-708398431831a(23) =-599833654686